用pe生成的can发送函数不能发数据

勇願噯伱 · 发表于 2014-11-4 08:52:22

这个是生成的发送函数
LDD_TError CAN1_SendFrame(LDD_TDeviceData *DeviceDataPtr, LDD_CAN_TMBIndex BufferIdx, LDD_CAN_TFrame *Frame)
{
  CAN1_TDeviceData *DeviceDataPrv = (CAN1_TDeviceData *)DeviceDataPtr;
  LDD_CAN_TBufferMask BufferMask;    /* Bitmask of the requested message buffer */
  uint8_t TxMBCode = 0x00U;          /* Temporary value of MB code */
  uint32_t StatusReg = CAN_PDD_GetStatusInterruptFlags1(CAN0_BASE_PTR); /* Read content of the status register */
  uint8_t DataIndex;

  if (BufferIdx > DeviceDataPrv->MaxBufferIndex) { /* Is BufferIdx greater than MaxBuffers? */
return ERR_PARAM_RANGE;          /* If yes then error */
  }
  BufferMask = (LDD_CAN_TBufferMask)(0x01UL << BufferIdx);
  if ((BufferMask & DeviceDataPrv->TxBufferMask) == 0x00U) { /* Is used buffer defined of BufferIdx for transmit? */
return ERR_PARAM_INDEX;          /* If no then error */
  }
  if (Frame->Length > DeviceDataPrv->MaxDataLen) { /* Is number of data greater than MaxDataLen? */
return ERR_PARAM_LENGTH;          /* If yes then error */
  }
  if (Frame->FrameType > LDD_CAN_RESPONSE_FRAME) { /* Is FrameType other than LDD_CAN_DATA_FRAME_STD, LDD_CAN_DATA_FRAME_EXT or LDD_CAN_REMOTE_FRAME? */
return ERR_PARAM_ATTRIBUTE_SET; /* If yes then error */
  }
  if ((StatusReg & (CAN_PDD_RECEIVING_MESSAGE | CAN_PDD_TRANSMITTING_MESSAGE)) != 0x00U) { /* Are both IDLE and TX/RX bits of the status register cleared?*/
return ERR_BUSY;                /* If yes then error */
  }
  /* {Default RTOS Adapter} Critical section begin, general PE function is used */
  EnterCritical();
  CAN_PDD_SetMessageBufferCode(CAN0_BASE_PTR, BufferIdx, CAN_PDD_MB_TX_NOT_ACTIVE); /* Set TX Buffer Inactive */
  if ((Frame->MessageID & LDD_CAN_MESSAGE_ID_EXT) != 0x00U) { /* Is the frame configured as Extended ID? */
CAN_PDD_SetMessageBufferID(CAN0_BASE_PTR, BufferIdx, CAN_PDD_BUFFER_ID_EXT, (Frame->MessageID)&~(LDD_CAN_MESSAGE_ID_EXT)); /*Assign extended ID to buffer */
CAN_PDD_EnableMessageBufferIDExt(CAN0_BASE_PTR, BufferIdx, PDD_ENABLE); /*Set ID extended */
  } else {
CAN_PDD_SetMessageBufferID(CAN0_BASE_PTR, BufferIdx, CAN_PDD_BUFFER_ID_STD, Frame->MessageID); /*Assign Standard ID to buffer */
CAN_PDD_EnableMessageBufferIDExt(CAN0_BASE_PTR, BufferIdx, PDD_DISABLE); /*Set ID standard */
  }
  if ((Frame->FrameType == LDD_CAN_DATA_FRAME)||(Frame->FrameType == LDD_CAN_RESPONSE_FRAME)) { /* Is it a data or WaitOnRemote frame? */
for (DataIndex = 0x00U; DataIndex < Frame->Length; DataIndex++) { /* Fill message buffer data array */
   CAN_PDD_SetMessageBufferData(CAN0_BASE_PTR, BufferIdx, DataIndex, Frame->Data[DataIndex]);
}
CAN_PDD_SetMessageBufferDataLength(CAN0_BASE_PTR, BufferIdx, Frame->Length); /* Set the length of the message */
CAN_PDD_EnableMessageBufferRTR(CAN0_BASE_PTR, BufferIdx, PDD_DISABLE); /* Clear RTR bit */
CAN_PDD_EnableMessageBufferSRR(CAN0_BASE_PTR, BufferIdx, PDD_DISABLE); /* Clear SRR bit */
if (Frame->FrameType == LDD_CAN_DATA_FRAME) {
   TxMBCode = CAN_PDD_MB_TX_DATA_FRAME; /* Set bufer as a transmit buffer */
} else {
   TxMBCode = CAN_PDD_MB_TX_RESPONSE_FRAME; /* Set bufer as a response transmit buffer for remote frames */
}
  } else {                            /* Remote frame */
TxMBCode = CAN_PDD_MB_TX_REMOTE_FRAME; /* Set Tx bufer for remote frames */
CAN_PDD_SetMessageBufferDataLength(CAN0_BASE_PTR, BufferIdx, 0x00U); /* Set the length of the message */
CAN_PDD_EnableMessageBufferRTR(CAN0_BASE_PTR, BufferIdx, PDD_ENABLE); /* Set the message as a remote frame */
if ((Frame->MessageID & LDD_CAN_MESSAGE_ID_EXT) != 0x00U) { /* Extended frame */
   CAN_PDD_EnableMessageBufferSRR(CAN0_BASE_PTR, BufferIdx, PDD_ENABLE); /* Set SRR bit */
} else {                         /* Standard frame */
   CAN_PDD_EnableMessageBufferSRR(CAN0_BASE_PTR, BufferIdx, PDD_DISABLE); /* Clear SRR bit */
}
  }
  CAN_PDD_SetMessageBufferCode(CAN0_BASE_PTR, BufferIdx, TxMBCode); /* Set code for Tx buffer of the message */
  /* {Default RTOS Adapter} Critical section end, general PE function is used */
  ExitCritical();
  return ERR_OK;
}
主函数是这样写的
while(1)
  {
   aa.MessageID=0x01;
        aa.FrameType=0;
        aa.Data=bb;
        aa.Length=0x08;
        // aa.TimeStamp=0x0f;
   // aa.LocPriority=2;
   //CAN1_ReadFrame(DeviceDataPtr,0x03,&aa);
   delay();
   CAN1_SendFrame(Prv,0x01,&aa);
   delay();
  }
可是从串口助手看不到数据，用示波器看到的high和low两根线都是4.8v左右，没有变化，我是新手，哪位大神可以给我指导一下！！！！

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